Description

Yellow 2G is a synthetic organic colorant belonging to the azo dye class, widely recognized for its bright and stable yellow hue. This high-performance pigment is valued for its excellent tinctorial strength and good lightfastness, making it a reliable choice for consistent coloration. It serves as a critical raw material for manufacturers in the textile, paper, and specialty ink industries seeking vibrant and durable yellow shades.

Application

• Textile Dyeing and Printing: Primarily used for coloring natural and synthetic fibers, including cotton, wool, and nylon, offering good wash and light fastness.
• Paper Coloring: Employed in the production of colored papers, tissues, and paperboard for packaging and decorative purposes.
• Ink Formulation: A key component in the manufacture of printing inks, including flexographic and packaging inks, for consistent yellow coloration.
• Leather Finishing: Used in dye baths for leather goods to achieve uniform and vibrant yellow finishes.
• Specialty Coatings: Incorporated into industrial and artistic paints and coatings where a stable yellow pigment is required.
• Plastics and Polymers: Suitable for mass coloration of certain plastics, providing a homogeneous yellow color.

Basic Information

Product Name	Yellow 2G
CAS No.	25739-65-5
Molecular Formula	C16H10Cl2N4Na2O7S2
Molecular Weight	551.29 g/mol
Synonyms	Acid Yellow 17; C.I. 18965; Food Yellow 5; Lissamine Yellow 2G; Wool Yellow 2G; 2,5-Dichloro-4-[4-[5-(hydroxy-kO)-3-methyl-4-sulfonatophenyl]diazenylphenyl-kN1]amino]benzenesulfonate disodium salt; Yellow 2G Lake
EINECS	247-206-1

Quality Control

Our Yellow 2G is produced under a stringent quality management system to ensure batch-to-batch consistency and reliability. Each lot is tested against rigorous internal specifications for critical parameters such as color strength, shade, solubility, and impurity profile. A Certificate of Analysis (COA) detailing purity, physical properties, and conformance is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials and sources of heat. The product is light-sensitive and should be stored away from direct light exposure to maintain stability.

Specification

Item	Specification
Appearance	Yellow to orange-yellow powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Color Strength	100 ± 5% (vs. Standard)
Shade	Within agreed tolerance
Moisture Content	≤ 5.0%
Water Solubility	Conforms
Ash Content	≤ 30.0%
Heavy Metals (as Pb)	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.